Dose Course 2018_Flipping book

19

Cross sections are scaled by mass density

Σ

– cross section for a medium represented by mass density, – mass density in the patient ( =1)

Σ

– cross section for water [ ( )/ ] is the correction function which is always equal to unity for water.

Σ

= [ ( )/ ] ∙

∙ Σ

Some additional considerations may be present in certain situations

Dublin 2018